Textured Glass in Copper Pendant Necklace

I found this funky glass cabochon at a gem show recently, and just loved the texturing on the back that makes it look like a butterfly wing or an autumn leaf from the front! It is wrapped in pure copper, and I'm allowing time to slowly antique it rather than using the usual liver of sulfur, since I don't know what kind of coating is on the back. I got a good deal on the stone, so you get a good deal too!

2 1/4" pendant height.
16-19" adjustable copper chain.